Double-locking anchor chain tensioner



FIG. 1 is a perspective view of a double locking anchor chain tensioner showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof. 

The ornamental design for a double-locking anchor chain tensioner, as shown and described. 